## version 0.3.3

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- Further fix when using tibble or other data.frame format that requires using 
`drop = TRUE` when subsetting columns

## version 0.3.2

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### Bugfixes

- Fixed bug in add_covariate

## version 0.3.1

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### Bugfixes

- Fixed conflict with sf packages and class 'dist' when calculating covariates

### NEWS.md setup

- added NEWS.md creation with newsmd

